How can htmlentities() and html_specialchars() functions be used to prevent data corruption in PHP scripts?

When user input is displayed on a webpage in PHP scripts, it is important to sanitize the data to prevent potential security vulnerabilities like cross-site scripting (XSS) attacks. The htmlentities() and htmlspecialchars() functions can be used to convert special characters in user input to their HTML entities, ensuring that the data is displayed safely on the webpage without being interpreted as HTML or JavaScript code. 

// Using htmlentities() function to prevent data corruption
$user_input = "<script>alert('XSS attack!');</script>";
$safe_input = htmlentities($user_input);
echo $safe_input;

Keywords

htmlentities htmlspecialchars data corruption PHP scripts prevent

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